Introduction To General, Organic, And Biochemistry
12th Edition
ISBN: 9781337571357
Author: Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher: Cengage Learning
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Chapter 22, Problem 60P
Interpretation Introduction
Interpretation:
The location of the enzymes that are both stable and active at
Concept Introduction:
Enzymes are the
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Students have asked these similar questions
Calculate the equilibrium constant for the following reaction at 37 oC.
Fructose 1,6-bisphosphate + ADP → Fructose 6-phosphate + ATP ΔGo’ = 14.27 kJ/mol
In glycolysis, glucose is broken down to yield energy. If the equilibrium constant of the isomerization of glucose-6-phosphate to fructose-6-phosphate is 0.5, would this reaction proceed in the forward or reverse direction? What is the free energy of the reaction? Using standard conditions (1 M) as an initial state, what are the equilibrium concentrations?
4. The reaction shown below is part of the glycolytic pathway. The standard free energy change
for this reaction is +0.4 kcal/mol.
Glucose-6-phosphate (G6P) €→ Fructose-6-phosphate (F6P)
C) Steady-state concentrations of these compounds in the cell (at 25°C) are 0.675 mM G6P and 0.0969
mM F6P. In which direction is this reaction allowed to proceed in the cell? (show calculations)
Chapter 22 Solutions
Introduction To General, Organic, And Biochemistry
Ch. 22.1 - Prob. 22.1QCCh. 22.2 - Prob. 22.2QCCh. 22.3 - Prob. 22.3QCCh. 22.4 - Which of the following is true regarding enzymes?...Ch. 22.5 - Match the description of the enzyme process with...Ch. 22 - What is the difference between a catalyst and an...Ch. 22 - What are ribozymes made of?Ch. 22 - Would a lipase hydrolyze two triglycerides, one...Ch. 22 - Compare the activation energy in uncatalyzed...Ch. 22 - Prob. 5P
Ch. 22 - Prob. 6PCh. 22 - Prob. 7PCh. 22 - Monoamine oxidases are important enzymes in brain...Ch. 22 - Prob. 9PCh. 22 - 0 What kind of reaction does each of the following...Ch. 22 - Prob. 11PCh. 22 - In most enzyme-catalyzed reactions, the rate of...Ch. 22 - 5 At a very low concentration of a certain...Ch. 22 - 6 If we wish to double the rate of an...Ch. 22 - 7 A bacterial enzyme has the following...Ch. 22 - 8 The optimal temperature for the action of...Ch. 22 - 9 The activity of pepsin was measured at various...Ch. 22 - Prob. 18PCh. 22 - Prob. 19PCh. 22 - Prob. 20PCh. 22 - Prob. 21PCh. 22 - 4 What kind of chemical reaction occurs most...Ch. 22 - 5 Which of the following is a correct statement...Ch. 22 - Prob. 24PCh. 22 - 7 Enzymes are long protein chains, usually...Ch. 22 - Prob. 26PCh. 22 - Prob. 27PCh. 22 - 0 Can the product of a reaction that is part of a...Ch. 22 - 1 What is the difference between a zymogen and a...Ch. 22 - 2 The enzyme trypsin is synthesized by the body in...Ch. 22 - Prob. 31PCh. 22 - Prob. 32PCh. 22 - Prob. 33PCh. 22 - Prob. 34PCh. 22 - Prob. 35PCh. 22 - Prob. 36PCh. 22 - Prob. 37PCh. 22 - Prob. 38PCh. 22 - 1 After a heart attack, the levels of certain...Ch. 22 - Prob. 40PCh. 22 - Prob. 41PCh. 22 - Prob. 42PCh. 22 - 5 Chemists who have been exposed for years to or...Ch. 22 - 6 Which enzyme preparation is given to patients...Ch. 22 - 7 Chymotrypsm is secreted by the pancreas and...Ch. 22 - Prob. 46PCh. 22 - Prob. 47PCh. 22 - Prob. 48PCh. 22 - Prob. 49PCh. 22 - Prob. 50PCh. 22 - Prob. 51PCh. 22 - Prob. 52PCh. 22 - Prob. 53PCh. 22 - Prob. 54PCh. 22 - Prob. 55PCh. 22 - Prob. 56PCh. 22 - Prob. 57PCh. 22 - Prob. 58PCh. 22 - Prob. 59PCh. 22 - Prob. 60PCh. 22 - 1 Food can be preserved by inactivation of enzymes...Ch. 22 - Prob. 62PCh. 22 - 3 Would you expect to find active digestive...Ch. 22 - Prob. 64PCh. 22 - Prob. 65PCh. 22 - Prob. 66PCh. 22 - 7 An enzyme has the following pH dependence: At...Ch. 22 - Prob. 68PCh. 22 - Prob. 69PCh. 22 - 0 Nerve gases operate by forming covalent bonds at...Ch. 22 - 1 What would be the appropriate name for an enzyme...Ch. 22 - Prob. 72PCh. 22 - 3 A liver enzyme is made of four subunits: 2A and...Ch. 22 - Prob. 74PCh. 22 - Prob. 75PCh. 22 - Prob. 76PCh. 22 - Prob. 77PCh. 22 - Prob. 78PCh. 22 - Prob. 79PCh. 22 - Prob. 80PCh. 22 - Prob. 81P
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- Why are so many different enzymes needed?arrow_forwardMost human enzymes function best in the temperature range of: a. 0C10C b. 10C25C c. 25C40C d. 40C55Carrow_forwardCalcium ions bind to a Ca2+-ATPase which has two identical calcium sites, in two stages with apparer equilibrium constants of K, = 3.5 x 105 and K2 = 2 x 106. Determine t for this binding. O 2.0 0.5 11 22 1.0arrow_forward
- Many metabolites are maintained at steady-state concentrations that are far from equilibrium. A comparison of Keg and Q, the mass-action ratio, can determine whether a metabolic reaction is far from equilibrium. The equation for this equilibrium is, fructose 6-phosphate + ATP = fructose 1,6-bisphosphate + ADP Calculate Keg for this reaction at T = 25.0 °C. AG' = -14.2 kJ/mol Keg = Calculate the mass-action ratio, Q, from the approximate physiological concentrations for rat heart tissue shown in the table. Metabolite Concentration (µM) fructose 6-phosphate 82.0 Q = fructose 1,6-bisphosphate 31.0 АТР 12,900 ADP 1,390arrow_forwardDo question 30arrow_forwardThe Keq for the isomerization of glucose-6-phosphate to fructose-6-phosphate is 0.504. What is the ΔG for the reaction if the concentration of glucose-6-phosphate is 0.01 M and the concentration of fructose-6-phosphate is 0.05 M? This reaction is in the cell (this is your temperature = 30 degree celcius ). the answer should be 0.588 kcal/mol - please show all steps I am not sure how to get that answerarrow_forward
- The value of ΔG° for the conversion of dihydroxyacetone phosphate to glyceraldehyde-3-phosphate (GAP) is 7.53 kJ/mol. If the concentration of dihydroxyacetone phosphate at equilibrium is 2.85 mM, what is the concentration of glyceraldehyde-3-phosphate?Assume a temperature of 25.0 °C.[GAP] = ???? mMarrow_forwardDoarrow_forwardAconitase catalyzes the conversion of Citrate to Isocitrate in the TCA cycle. The standard free energy change (∆G0’) for this reaction is +6.7 kJ/mol. The observed free energy change (∆G) for the reaction in pig heart mitochondria is +0.8 kJ/mol. The ratio of [isocitrate]/[citrate] in these mitochondria is: a. 10 b. 1 c. 100 d. 0.01 e. 3 f. 0.33 g. 0.10 h. 0.25 i. 2arrow_forward
- Would you expect the reaction ATP → ADP + Pito be accompanied by a decrease or increase in entropy? Why?arrow_forwardIn glycolysis, the enzyme pyruvate kinase catalyzes this reaction: phosphoenolpyruvate + ADP → pyruvate + ATP Calculate the equilibrium constant for this reaction from the following information. (R 8.315 J/mol K; T = 298 K) Reaction 1: ATP → ADP+ Pi AG-30.5 kJ/mol Reaction 2: AGO-61.9 kJ/mol phosphoenolpyruvate pyruvate + Piarrow_forwardConsider the following reaction: fructose-6-phosphate glucose-6-phosphate. At equilibrium, the concentrations are 300mM fructose-6-phosphate and 600mM glucose-6-phosphate. What is deltaG¹⁰ for the reaction? (Use the rounded number for the Gas constant: R=8 J/molk) a. -15936 J/mol b.-1652 J/mol O c. 1652 J/mol O d. 15936 J/molarrow_forward
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